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55054849 = 64185889
BaseRepresentation
bin1101001000000…
…1001000000001
310211121002001111
43102001020001
5103043223344
65244003321
71235646523
oct322011001
9124532044
1055054849
1129093583
1216530541
13b538145
147451a13
154c77834
hex3481201

55054849 has 4 divisors (see below), whose sum is σ = 55141380. Its totient is φ = 54968320.

The previous prime is 55054829. The next prime is 55054873. The reversal of 55054849 is 94845055.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 51840000 + 3214849 = 7200^2 + 1793^2 .

It is a cyclic number.

It is not a de Polignac number, because 55054849 - 213 = 55046657 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55054819) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42304 + ... + 43585.

It is an arithmetic number, because the mean of its divisors is an integer number (13785345).

Almost surely, 255054849 is an apocalyptic number.

It is an amenable number.

55054849 is a deficient number, since it is larger than the sum of its proper divisors (86531).

55054849 is an equidigital number, since it uses as much as digits as its factorization.

55054849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86530.

The product of its (nonzero) digits is 144000, while the sum is 40.

The square root of 55054849 is about 7419.8954844391. The cubic root of 55054849 is about 380.4216211303.

The spelling of 55054849 in words is "fifty-five million, fifty-four thousand, eight hundred forty-nine".

Divisors: 1 641 85889 55054849